Enum redfa::regex::Regex
[−]
[src]
pub enum Regex<T> { Null, Empty, Except(Vec<T>), Alt(Vec<T>, Vec<Regex<T>>), And(Vec<Regex<T>>), Not(Box<Regex<T>>), Cat(Vec<Regex<T>>), Kleene(Box<Regex<T>>), }
A regular expression over the alphabet T
.
Variants
Null
The null set. This never matches anything.
Empty
The empty string (matches exactly "").
Except(Vec<T>)
Matches any single character except the listed ones.
Alt(Vec<T>, Vec<Regex<T>>)
Alternation (also known as disjunction). Matches any of the contained characters, as well as any string matched by a contained regex.
And(Vec<Regex<T>>)
Conjunction. Matches iff all contained regexes match.
Not(Box<Regex<T>>)
Negation. Matches iff the contained regex does not match.
Cat(Vec<Regex<T>>)
Concatenation. Matches iff the contained regexes match in sequence.
Kleene(Box<Regex<T>>)
Kleene closure. Matches zero or more repetitions of the contained regex.
Methods
impl<T> Regex<T>
[src]
fn nullable(&self) -> bool
Tests whether a regular expression is nullable, i.e. whether it matches the empty string.
Trait Implementations
impl<T: Clone> Clone for Regex<T>
[src]
fn clone(&self) -> Regex<T>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more
impl<T: Debug> Debug for Regex<T>
[src]
impl<T: Eq> Eq for Regex<T>
[src]
impl<T: PartialEq> PartialEq for Regex<T>
[src]
fn eq(&self, __arg_0: &Regex<T>) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &Regex<T>) -> bool
This method tests for !=
.
impl<T: Ord> Ord for Regex<T>
[src]
fn cmp(&self, __arg_0: &Regex<T>) -> Ordering
This method returns an Ordering
between self
and other
. Read more
impl<T: PartialOrd> PartialOrd for Regex<T>
[src]
fn partial_cmp(&self, __arg_0: &Regex<T>) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, __arg_0: &Regex<T>) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, __arg_0: &Regex<T>) -> bool
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
fn gt(&self, __arg_0: &Regex<T>) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, __arg_0: &Regex<T>) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl<T: Ord> Normalize for Regex<T>
[src]
fn normalize(self) -> Self
impl FromStr for Regex<char>
[src]
type Err = ParseError
The associated error which can be returned from parsing.
fn from_str(s: &str) -> Result<Regex<char>, ParseError>
Parse a string as a regular expression.